Baling press



Aug. 11, 1925. 1,549,387

F. W. SCHMITHALS BALING PRESS Filed Aug. 20. 1923 3 Sheets-Sheet 1 WITN SSES INVEN'T'"Q)R F7/@der 'icl /IZ'eS'cfunf mais fil( @1111 ATTORNEY 5 Sheets-Sheet 2 INVENTOR ATTORNEY Mmmm@ mmmmw BALING PRESS F. W. SCHMITHALS Filed Aug. 2U. 1923 Aug. 11, 1925.

Aug 11, 1925.

F. W. SCHMITHALS BALING PRESS Filed Aug. 20. 1923 3 Sheets-Sheet 5 lIG. 3

EUHHHNUH:

IN VE N TOR ATTORNEY WITNESSES n D. N f f To all whom it may concern.'

Patentedug. .11, 1925.

UNITED STATES FREDERICK W. SCHMITHALS, 0F MILWAUKEE, WISCONSIN.

BALING PRESS.

Application med auguran, 192s. serial nu. 653,395.

it known that I, FREDERICK W. a citizen of the United States, and resident of Milwaukee, in the count of Milwaukee and State 'of Wisconsin, ave invented new and useful Improvements in Baling Presses, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The invention relates to balinvr presses and more particularly to a press ihr baling scrap metal.

Scrap metal baling presses must be capable of resisting high working pressures and be capable of long and continued operation in the hands of unskilled operators. To meet these requirements the press must be of heavy duty construction, simple in operation and of good workmanship and consequently these presses involve a considerable initial expense which must be compensated for by long life and economical operation. Presseslof this kind usually embody a press Be SoHMrrHALs,

box provided with a. cover movable tol a.

closed position when the press box is charged. This cover must have a tight fit with the sides of the press box during the pressing operation to prevent the extrusion of any scrap metal through the joints between the cover and box and consequently locking means are provided to hold the cover tightly against the box during the pressing operation. One of the objects of this invention is to provide a simple but very elcient form of cover lock in which ixed wedges on, the frame ofthe machine cooperate wlth wedges on the moving cover to hold it in closed position, and another object is to relieve the press box of objectionable stresses from the action of the high pressure ram by the use of tension rods mounted free of the press box.

T e invention further consists in the several features hereinafter set forth and more` particularly defined by claims at the conclusion hereof.

In the drawings: Fig. 1 is a perspective view of a balin press embodying the invention; Fig. 2 1s a. vertical sectional view through the press with the cover and high pressure ram shown in ull; Fig. 3 is a Sec?V tional view taken on the line 3 3 of Fig. 2.

In the drawings the numeral 4 designates the press box, 5 the cover for said box, 6 the low pressure ram working in the press box and 7 the high pressure ram working in said press box.

The rams are operated by hydraulic (water or oil) pressure during the pressing stroke by mechanism well known to those skilled in this art and not forming a part of the present invention. The ram 6, as shown, is returned from its pressing stroke by a weight 8, operatively connected to it, and the igh pressure ram is returned by its Own weight and weights 9. The iluid which moves the ram 6 is introduced into a cylnder 10 forming the rod of said ram through 'a stationary ide 11. The Huid which moves the ram is introduced into the high pressure cylinder 12 and acts on the iston 13 connected to the ram.

T e general operation of the rams is well known and will, therefore, be only briefly referred to. With the cover in open position, as shown in Fig. 1, the box is charged with scrap S, the cover is then moved to closed position and the low pressure ram 6 compresses the scrap to the :form shown in Fig. 2, after which the high pressure ram 7 moves up in the press box to com lete the pressing of the metal into a finis ed bale which is subsequently ejected from the press box b the ram 7 aft/er the cover has been move back.

The press box is mounted on I beam supports 14 and columns or supports 15 are mounted adjacent its front end. A bridge piece 16 is preferabl mounted on the tops of the columns. Hiia tension rods 16' extend through the bri ge 16, the columns 15, openings 17 in the sides of the press box, openlngs 18 in a plate 19 beneath the front end of the press box, through the spacing sleeves 20 interposed between the plate 19 and the bosses 21 of the cylinder 12 and through openings 22 in said bosses. Nuts 23 on the ends of the rods hold them in operative position. These rods are not secured to the press box but are free to trans mit the forces reacting on the high pressure cylinder to the beam or bridge 16 and the coverl and then to the material being pressed -so that the press box itself is relieved of objectionable strains.

The cover 5 has wheels 24 running on a track 24 and whose 'ournals are connected to rods 25 sliding in rackets 26 projecting from the cover with springs 27 lnterpose Vbetween the wheel journals and said bracket to provide spring mountings for the wheels so that the cover may move as a carriage over the top of the box and then be depressed into tight engagement with the sides of the press box and locked thereto. The cover is moved relatively to the press` box to open and closed position by means of a. compressed-air-operated iston 28 working in a cylinder 29 and having its rod 30 connected to the cover. The cylinder 29 is supported at its near end on a frame 31 and at its front end is secured to a frame member 32 mounted on supports 33 at the sides of the rear portion of the press box.

The means for locking the cover in operative position comprises a. pair of spaced wedges 34, which are relative] fixed by their mounting on the frame mem r 16 directly over the space in which the high pressure ram 7 Works, cooperating with spaced wedges 35 on the cover and a pair of spaced wedges 36, which are fixed by their mounting on the frame members or supports 33, cooperating with a pair of rollers 37 0n the carriage. The greatest pressure upon the cover comes when the high pressure ram is operating and the front set of wedges 34 engaging the Wedges 35 lock the cover in position against this pressure, it being noted that the Wedging engagement between these wedges 34 and 35 is quite extensive and the wedges 35 are formed on a heavy casting 38 at the front of the carriage Whose base 39 has a large bearing area as it extends the full Width of the cover and from the front end back over the width of the high pressure space, as shown in Fig. 2. The wedge lock for the rear end of the cover does not have to resist as high pressure and consequently the rollers 3T are used with the Wedges 'hen the cover is moved to its closing position it will be noted from Fig. 2 that the wedge connections above described depress the cover down into tight engagement with the press box, and that when in that position the cover itself forms a bridge piece between the columns or supports l5, aud the material S in the pressing box is initially compressed by the low pressure ram and is further compressed between the high pressure ram and said cover `vto complete the baling operation. It will be noted on the drawings that the wedges 34: and 35 are inclined downwardly toward the head end of the press box so that when the cover is closed and the air pressure is acting on the piston 28 to keep the cover closed there is a further tendency to produce a tight wedging engagement between the cooperating wedges bv the action of the low pressure ram in lna ing its pressing stroke, as said ram in moving forward has a tendency to move the cover 5 forward. lVhen the low pressure ram has finished its presslng operation the pressing action of the high pressure ram has a tendency to loosen the wedging engagement between the Wedges 34 and 35 and this is of advantage because it prevents a jamming of the wedges to such an e'xtent as would not permit of the return of the cover to open position under the action of compressed air acting on the piston 28,` though it will be understood that. this tendency to loosen the wedge engagement is not suiicient to prevent the forming of a good joint between the cover and the press box while the high pressure ram is operating. As the cover forms a bridge piece in lighter types of presses the wedges 35 may be secured directly to the supports 15 but on the heavy duty presses the construction illustrated is preferred as the bridge piece 16 prevents any tendency to distort the alinement of the rods 16'.

I desire it to be understood that this invention is not to be limited to any specific form or arrangementv of parts except 1n so far as such limitations are specified in the claims.

Yhat I claim as my invention is:

1. In a baling press, the combination of a press box, a movable cover for closing the filling opening of said box, fixed Wedges, and wedges on the cover automatically engaging with said fixed wedges when the cover is moved to `closed position to hold the cover closed.

2. In a baling ress, the combination of a press box, a mova le cover for said box, supports at the sides of the press box adjacent its ends provided with Wedges and parts on the cover moved into Wedging engagement with said first named Wedges by the movement of the cover, as the cover moves to closed' position, to hold the cover closed.

3. In a baling press, the combination of a press box, a movable cover for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first named ram, fixed wedges supported above the press box over the space worked through by said secondnamed ram, and wedges on said cover cooperating with said lixed Wedges to hold the cover closed.

4. In a baling press, the combination of a pless box, a movable cover for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, fixed Wedges supported above the press box over the space worked through by said secondnamed ram, Wedges on said cover cooperating with said fixed wedges to hold the cover closed, and a support for said Wedges on the cover having a base covering the area acted on by said second-named ram.

5. In a baling press, the combination of a press box, a movable cover for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, an hydraulic'cylinder in which the piston of said second-named rain works, means at the front end of the press box for holding said cover in closed position, and tension rods connecting said means with said pressure cylinder of the second-named ram, said tension rods extending loosely through exterior parts of the press box.

G. In a baling press, the combination of a press box, a movable c'over, for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, an hydraulic cylinder in which the piston of said second-named ram is mounted, supports at the front end of the box, a bridge piece mounted on said supports, tension rods connecting said bridge piece with the pressure cylinder of the second-named ram, said tension rods extending loosely through exterior parts of the press box, wedges on said bridUe piece, and wedges ony said cover engageabe with said first-named wedge to hold the cover closed.

'i'. In a baling,r press, the combination of a press box. a movable cover for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, an hydraulic cylinder in which the piston of said second-named ram works, and means transmitting the pressing force of the material against the cover, when it is closed, to the pressure cylinder of said second-named ram including tension rods extending loosely through parts forming the sides of the press box.

8. In a baling press, the combination of a press box, a movable cover ,for said box,l

a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, fixed wedges inclining downwardly and forwardly toward the front end of the press box and supported above the press box, and parts on said cover cooperating with said fixed wedges to hold the cover closed.

9. In a baling press, the combination, of a press box, a movable cover for said box, rams working in said box, an hydraulic cylinder, one of the rams having a piston working in said cylinder, and means for transmitting the pressing force of the material against the cover, when it is closed, to said cylinder independent of the press box whereby the pressing force of one ram is maintained independent of the other.

10. In a baling press, the combination of a press box, a movable cover for said box, a ram working in said box, another ram working in said box across one end thereof and the front of said first-named ram, an hydraulic cylinder in which the piston of said second-named ram is mounted, a bridge piece mounted adjacent the press box, tension rods connecting said bridge piece with the cylinder of said second-named am, said tension rods being adapted to move freely relative to the press box, said cover when in closed position being associated with said bridge piece to transmit the pressing force of the material against the cover to said bridge piece, tension rods and the pressure cylinder of said second-named ram.

In testimony whereof, I aflix my signature.

FREDERICK Vt. SCHMITHALS.

said second-named ram works` means at the front end of the press box for holding said cover in closed position, and tension rods conneeting said means with said pressure cylinder of the second-named ram, said tension rods extending looseiy through exterior parts of the press box.

(i. In a baling press, the combination of a press box. a movable cover for said box` a ram working in said box` another ram working in said box across one end thereof and the front of said first-named ram, an h vdraulie cylinder in whieh the piston of said second-named ram is mounted` supports at the front end of the box, a bridge piece mounted ou said supports, tension rods connecting said bridge piece with the pressure c viinder of the second-named ram. said tension rods extending loosely through exterior parts of the press box` wedges on said bridge pieee. and wedges on` said Cover engage-able with said first-named wedge to hold the eover closed.

T. In a baling press. the combination of a press box. a movable cover for said box, a ram no1-king in said box, another ram working in said box across one end thereof and the front of said first-named ram, an hydraniie cylinder in which the piston of said seeolld-nained ram works, and means transmitting the pressing force of the mato rial against the rover, when it is Closed, to the pressure eylinder ot' said second-named ram inciuding tension rods extending loosely through parts forming the sides of the press box.

S. In a baling press` the combination of a press box, a movable eoveifor said box.

a ram working in said box, another rain working in said box across one end thereof and the front of said first-named ram. fixed wedges inclining downwardly and forwardly toward the front end of the press box and supported above the press box, and parts on said cover cooperating with said fixed wedges to hold the eover closed.

t). In a baling press, the combination, of a press box, a movable cover for said box, rams working in said box, an hydraulic` cylinder, one of the rams having a piston working in said cylinder, and means for transmitting the pressing force of the material against the cover, when it is closed, to said cylinder independentV of the press box whereby the pressing toree of one ram is maintained independent of the other.

lt. In a baling press, the eombination oi a press box, a movable eove.' for said box, a rain working in said box, another ram working in said box across one end thereotl and the front of said tirstnamed ram. au hydraulic c vlinder in which the piston ot' said secoudaiamed ram is mounted` a bridge piece mounted adjacent the press box` tension rods connecting said bridge piece with the cylinder of said seeondaiaaued ram` said tension rods being adapted to move freely relative to the press box, said cover when in rinsed position being associated with said bridge piece to transmit the pressing force of the material against the rover to said bridge piece, tension rods and the pressure cylinder of said seeond-named ram.

In testimony whereof. I atiix my signature.

FR EDIC RICK SCI IM I'lHA LS.

DISCLAIMER 1,549.3S7.Frederick W. Schmithals, Milwaukee, Wis. BALiNG Pnnss.

dated August. 11, 1925. Logemann Brothers Company.

Patent Disclaimer filed August 5, 1936, by the assignee.

I'lereby enters this disclaimer to thatpart of the specification which is in the following Words: and another 'object is to relieve the press box of objectionable stresses from the actuon of the high pressure ramiby` the use of itension rods mounted free of the press box.

(Lines 39 to 43, inclusive, of page 1 of the speciieation),

and to claims 5, 7, 9, and of the specication.

[@jicial Gazette September 1, 1.936]

DISCLAIMER 1,549, SST-Frederick W. Schmitlus, Milwaukee, Wis. BALiNG Pnss. Patent dt-ed August 11, 1925. Disclaimer filed August 5, 1936, by the assignee, Logemann Brothers Company.

Hereby enters this disclaimer to that. part of the specification which is in the following words: and another object is to relieve the press box of objectionable stresses from the action of the high pressure ramby the use of ,tension rods mount-ed free of the press box. (Lines 39 to 43, inclusive, of page 1 of the specification), and to claims 5, 7, 9, and 10 of the specification.

Ojcvlal Gazette September 1, 1936] 

